Can someone me solve this algebraically? i’ll give

Your solution was correct.

Step-by-step explanation:

y = 3x + 5

y = 2x - 1

(-6,-13) ?

Rearrange equations and eliminate the y variable to solve for x variable:

y = 3x + 5  ---> y - 5 = 3x

y = 2x - 1   ---> y + 1 = 2x

Subtract the bottom equation from the top equation:

-5 = 3x

1 = 2x

-6 = x

Substitute x = -6 into y = 2x - 1

y = 2x - 1

y = 2(-6) - 1

y = -12 - 1

y = -13

irrational, cannot

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!